42947528 has 32 divisors (see below), whose sum is σ = 89072760. Its totient is φ = 19284480.

The previous prime is 42947503. The next prime is 42947537. The reversal of 42947528 is 82574924.

42947528 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 25989604 + 16957924 = 5098^2 + 4118^2 .

It is a super-2 number, since 2×42947528² = 3688980322621568, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1733 + ... + 9428.

Almost surely, 2^42947528 is an apocalyptic number.

It is an amenable number.

42947528 is an abundant number, since it is smaller than the sum of its proper divisors (46125232).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42947528 is a wasteful number, since it uses less digits than its factorization.

42947528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11217 (or 11213 counting only the distinct ones).

The product of its digits is 161280, while the sum is 41.

The square root of 42947528 is about 6553.4363504958. The cubic root of 42947528 is about 350.1972439235.

The spelling of 42947528 in words is "forty-two million, nine hundred forty-seven thousand, five hundred twenty-eight".